<!DOCTYPE html>
<html>
	<head>
		<meta charset="UTF-8" />
		<title>7.断点的作用</title>
	</head>
	<body>
		<script type="text/javascript" >
			let obj = {
				a:1,
				arr:[1,3,5,7,9]
			}
			console.log(obj)
			debugger;
			obj.arr[0] = 100
			console.log(obj)
		</script>
	</body>
</html>